diff --git a/src/globals.h b/src/globals.h
index 3685fc7..4b55446 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -1561,6 +1561,9 @@
 	(defined(FEAT_INS_EXPAND) && defined(FEAT_COMPL_FUNC))
 EXTERN char_u e_notset[]	INIT(= N_("E764: Option '%s' is not set"));
 #endif
+#ifndef FEAT_CLIPBOARD
+EXTERN char_u e_invalidreg[]    INIT(= N_("E850: Invalid register name"));
+#endif
 
 #ifdef MACOS_X_UNIX
 EXTERN short disallow_gui	INIT(= FALSE);